Section: Solid Mechanics | Marks: 2
A horizontal effort P is applied to raise a block of weight W on a rough surface inclined at an angle θ with the horizontal. If ߤ௦ is the coefficient of static friction between the block and the surface, the minimum effort P required to impend the upward motion of the block along the surface is
- A. ቀ ఓೞି௧ఏ ଵାఓೞ௧ఏቁ
- B. ቀ ఓೞା௧ఏ ଵିఓೞ௧ఏቁ
- C. ቀ ఓೞି௧ఏ ଵିఓೞ௧ఏቁ
- D. ቀ ఓೞା௧ఏ ଵାఓೞ௧ఏቁ
Answer: B. ቀ ఓೞା௧ఏ ଵିఓೞ௧ఏቁ